Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 117Get this manual
INTAKEEXHAUST VALVE REFNOQTY1 10 11 12 13 14 15 16 TORQUE DESCRIPTION VALVEintake VALVEexhaust WASHER SEAL SPRINGinner RETAINER COTTER PINvalve LIFTERvalve ARMrocker valve SCREWvalve adjusting NUT SPRING COLLAR SPRING SHAFTrocker RETAINER lbinlbftNm